If you have PCB combination in your 10+2 and if you have secure 50% marks in 10+2 (if you are UR then 50% else 45% for SC/ST/OBC) then you are eligible for the NEET. If you want to apply for the examination, then you have to appear as a Dropper and the NEET code for dropper candidates is 02.

For more information regarding the NEET codes, visit the link below:

https://medicine.careers360.com/articles/neet-qualification-codes

I hope this answer helps. All the very best for your future endeavors!